From patchwork Sun Feb 28 15:18:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexander Aring X-Patchwork-Id: 12108261 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E6953C43381 for ; Sun, 28 Feb 2021 15:20:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9EDCA64D5D for ; Sun, 28 Feb 2021 15:20:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230474AbhB1PT5 (ORCPT ); Sun, 28 Feb 2021 10:19:57 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:60666 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230408AbhB1PTy (ORCPT ); Sun, 28 Feb 2021 10:19:54 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1614525508; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=oBgnfLo+d/dBvpawLqs1HKruHJv8Tx0bnqG3j9bT2vE=; b=Q0b0syh9QnWwaWvnCVPqftFcShHJ5JYJ37qppyWpK6PXXFbTP32uI87BoTm1XKDCa33HcG +yS1gWRdgmi4o3Hhyn9b8/ir+HtKlzCGKjerqPMz3FhI2kEd2oRacB+WmEn9Q7wo0dpWNC CzLL+Jog66SwAZEyME/1LJJu5zMlXyY= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-315-IUULfvWeOu67abUDtmYARA-1; Sun, 28 Feb 2021 10:18:23 -0500 X-MC-Unique: IUULfvWeOu67abUDtmYARA-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C719E1936B61; Sun, 28 Feb 2021 15:18:22 +0000 (UTC) Received: from carbon.redhat.com (ovpn-112-225.rdu2.redhat.com [10.10.112.225]) by smtp.corp.redhat.com (Postfix) with ESMTP id 628AB5C1D5; Sun, 28 Feb 2021 15:18:21 +0000 (UTC) From: Alexander Aring To: stefan@datenfreihafen.org Cc: linux-wpan@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH wpan 01/17] net: ieee802154: make shift exponent unsigned Date: Sun, 28 Feb 2021 10:18:01 -0500 Message-Id: <20210228151817.95700-2-aahringo@redhat.com> In-Reply-To: <20210228151817.95700-1-aahringo@redhat.com> References: <20210228151817.95700-1-aahringo@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 Precedence: bulk List-ID: X-Mailing-List: linux-wpan@vger.kernel.org This patch changes the iftype type variable to unsigned that it can never be reach a negative value. Reported-by: syzbot+7bf7b22759195c9a21e9@syzkaller.appspotmail.com Signed-off-by: Alexander Aring --- net/ieee802154/nl802154.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/ieee802154/nl802154.c b/net/ieee802154/nl802154.c index e9e4652cd592..3ee09f6d13b7 100644 --- a/net/ieee802154/nl802154.c +++ b/net/ieee802154/nl802154.c @@ -898,8 +898,8 @@ static int nl802154_get_interface(struct sk_buff *skb, struct genl_info *info) static int nl802154_new_interface(struct sk_buff *skb, struct genl_info *info) { struct cfg802154_registered_device *rdev = info->user_ptr[0]; - enum nl802154_iftype type = NL802154_IFTYPE_UNSPEC; __le64 extended_addr = cpu_to_le64(0x0000000000000000ULL); + u32 type = NL802154_IFTYPE_UNSPEC; /* TODO avoid failing a new interface * creation due to pending removal?